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Table 1 Minimum, median and maximum values for Ca, Mg and Crea concentrations and fractional excretions of calcium and magnesium

From: Acidification is required for calcium and magnesium concentration measurements in equine urine

Parameter

Minimum value

Median value

Maximum value

Ca native (mmol/L)

0.87

3.57

31.07

Ca acidified (mmol/L)* vs Ca native

0.60

16.98

67.38

Ca acidified stored (mmol/L)*vs Ca native

0.56

16.98

66.38

Mg native (mmol/L)

1.33

16.01

35.59

Mg acidified (mmol/L)*vs Mg native

1.40

18.21

44.12

Mg acidified stored (mmol/L)**vs Mg native

1.30

18.35

44.35

Crea native (mmol/L)

1.03

12.43

28.57

Crea acidified (mmol/L) n.s. vs Crea native

0.99

13.49

28.92

Crea acidified stored (mmol/L) n.s. vs Crea native

0.98

13.71

27.52

FECa native (%)

0.24

1.42

15.20

FECa acidified (%)*** vs FECa native

0.13

3.98

29.03

FEMg native (%)

2.94

21.67

44.26

FEMg acidified (%)**** vs FEMg native

2.82

21.52

45.85

  1. Ca calcium, Crea creatinine, FECa fractional excretion of calcium, FEMg fractional excretion of magnesium, Mg magnesium, *p < .0001, **p = 0.0015, ***p = 0.0003, ****p = 0.0039